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90 lines
2.7 KiB
90 lines
2.7 KiB
<template> |
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<view class="u-collapse"> |
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<u-line v-if="border"></u-line> |
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<slot /> |
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</view> |
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</template> |
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<script> |
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import props from './props.js'; |
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/** |
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* collapse 折叠面板 |
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* @description 通过折叠面板收纳内容区域 |
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* @tutorial https://www.uviewui.com/components/collapse.html |
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* @property {String | Number | Array} value 当前展开面板的name,非手风琴模式:[<string | number>],手风琴模式:string | number |
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* @property {Boolean} accordion 是否手风琴模式( 默认 false ) |
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* @property {Boolean} border 是否显示外边框 ( 默认 true ) |
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* @event {Function} change 当前激活面板展开时触发(如果是手风琴模式,参数activeNames类型为String,否则为Array) |
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* @example <u-collapse></u-collapse> |
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*/ |
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export default { |
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name: "u-collapse", |
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mixins: [uni.$u.mpMixin, uni.$u.mixin,props], |
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watch: { |
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needInit() { |
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this.init() |
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} |
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}, |
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created() { |
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this.children = [] |
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}, |
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computed: { |
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needInit() { |
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// 通过computed,同时监听accordion和value值的变化 |
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// 再通过watch去执行init()方法,进行再一次的初始化 |
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return [this.accordion, this.value] |
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} |
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}, |
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watch: { |
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// 当父组件需要子组件需要共享的参数发生了变化,手动通知子组件 |
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parentData() { |
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if (this.children.length) { |
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this.children.map(child => { |
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// 判断子组件(u-checkbox)如果有updateParentData方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值) |
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typeof(child.updateParentData) === 'function' && child.updateParentData() |
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}) |
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} |
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}, |
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}, |
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methods: { |
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// 重新初始化一次内部的所有子元素 |
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init() { |
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this.children.map(child => { |
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child.init() |
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}) |
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}, |
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/** |
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* collapse-item被点击时触发,由collapse统一处理各子组件的状态 |
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* @param {Object} target 被操作的面板的实例 |
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*/ |
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onChange(target) { |
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let changeArr = [] |
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this.children.map((child, index) => { |
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// 如果是手风琴模式,将其他的折叠面板收起来 |
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if (this.accordion) { |
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child.expanded = child === target ? !target.expanded : false |
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child.setContentAnimate() |
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} else { |
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if(child === target) { |
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child.expanded = !child.expanded |
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child.setContentAnimate() |
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} |
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} |
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// 拼接change事件中,数组元素的状态 |
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changeArr.push({ |
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// 如果没有定义name属性,则默认返回组件的index索引 |
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name: child.name || index, |
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status: child.expanded ? 'open' : 'close' |
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}) |
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}) |
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this.$emit('change', changeArr) |
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this.$emit(target.expanded ? 'open' : 'close', target.name) |
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} |
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} |
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} |
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</script> |
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<style lang="scss" scoped> |
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@import "../../libs/css/components.scss"; |
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</style>
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